Solution-based synthesis of a four-arm star-shaped poly(L-lactide)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F16%3A00003597" target="_blank" >RIV/46747885:24410/16:00003597 - isvavai.cz</a>
Result on the web
<a href="http://www.tandfonline.com/doi/full/10.1080/15685551.2015.1136532" target="_blank" >http://www.tandfonline.com/doi/full/10.1080/15685551.2015.1136532</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/15685551.2015.1136532" target="_blank" >10.1080/15685551.2015.1136532</a>
Alternative languages
Result language
angličtina
Original language name
Solution-based synthesis of a four-arm star-shaped poly(L-lactide)
Original language description
The mechanical properties of biocompatible poly(L-lactide) (PLA) could be dramatically enhanced by cross-linking and interesting network structures might be achieved via the formation of branched and star-shaped structures prior to such cross-linking. However, the synthesis of a four-armed star-shaped PLA is limited to bulk melt polymerization at relatively high temperatures that may degrade the monomer and render the reaction kinetics difficult to control. In this work, a solution-based polymerization approach is introduced with dimethylformamide as the solvent for the initiator and all other reactants. Varying the reactant concentrations and reaction temperature, four-arm PLA star structures were produced in solution and their properties were analyzed. The progress of the polymerization reaction was studied using the 1H NMR and Fourier transform infrared spectroscopy. The quantitative evaluation of the monomer conversion was discussed on theoretical basis. The thermal properties and the crystallinity of the product polymers were evaluated using differential scanning calorimetry. Results indicate polymerization and cross-linking of the four-armed PLA were successful. The introduced solution-based method could open venues for better controlled and more economic reactions of star-shaped and cross-linked PLA.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JJ - Other materials
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Designed Monomers and Polymers
ISSN
1385-772X
e-ISSN
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Volume of the periodical
19
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
180-192
UT code for WoS article
000375437000010
EID of the result in the Scopus database
2-s2.0-84961286219